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Leveraging Existing Application Processors in Mobile Devices to Implement VoIP Client

Leveraging Existing Application Processors in Mobile Devices to Implement VoIP Client. VoIP Client Requirements Enabling Rich Telephony Features on Cellular Handset. Standards Compliant and Interoperable with VoIP networks Based on IETF RFC SIP 3261

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Leveraging Existing Application Processors in Mobile Devices to Implement VoIP Client

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  1. Leveraging Existing Application Processors in Mobile Devices to Implement VoIP Client

  2. VoIP Client RequirementsEnabling Rich Telephony Features on Cellular Handset • Standards Compliant and Interoperable with VoIP networks • Based on IETF RFC SIP 3261 • Support for standard audio compression formats used in VoIP networks • G.711, G.729A/B, G.723.1, G.726, GSM-AMR, G.722, G.722.1, G.722.2 (AMR-WB) • Implement basic and advanced signaling and call control features • Call Setup, Teardown, Hold/Resume, Transfer, Multi-Line appearance • Local 3-Way conferencing (requires 2-channels), bridged-conferencing • Mid-Call DTMF, CPT, Polyphonic ring tones • Text Messaging and Presence (SIMPLE) • Authentication and Security mechanisms • Proxy Discovery • Support Hands-Free speakerphone operation (Acoustic Echo Cancellation) • QoS: Noise Cancellation, Adaptive Jitter Buffer and Lost packet Concealment • Configurable by provider and user in field • Use the existing User Interfaces (MMI) on the cellular device

  3. VoIP Client RequirementsDesign Considerations • Co-Exist with current applications and OS • Minimize Memory requirements for program and Data • Minimize Processing requirements • Minimize Power dissipation • Use the existing User Interfaces (MMI) on the cellular device • Field Upgradeable • Deliver Better Voice Quality and an overall better Communication Experience to the Consumer • And achieve ALL of the above without adding additional cost to the BOM

  4. VoIP Client: Traditional ApproachHigh Cost, High Power, Complex Multi-Processor System • Application processor: Non-Compute Intensive Software Modules • OS • Network Stacks • VoIP: Protocols, System Framework, System Software, Jitter Buffer, Conference Mixer, Application, Management SW et.. • UI/GUI/MMI • Productivity Applications • Drivers • DSP Processor: Compute Intensive Signal Processing Algorithms • Voice Coders, Echo Cancellers (AEC for Speaker Phone), Tone Generators, Lost packet Compensation, Noise Canceller, Media Controller, Audio capture-playback. • Complex multi-processor system • Requires DSP processor which adds power and cost • Software is more complex and DSP sub-system is a black-box, difficult to upgrade • Locked to proprietary DSP architecture (System is not Scalable) • Requires Separate Tool chains and Software development skill set

  5. VoIP Client: SoftDSP ApproachSingle Processor Solution • Application processor: All Software Modules including Media Algorithms • OS, Network Stacks, Drivers • VoIP: Protocols, System Framework, System Software, Jitter Buffer, Conference Mixer, Application, Management SW etc. • Voice Coders, Echo Cancellers (AEC for Speaker Phone), Tone Generators, Lost packet Compensation, Noise Canceller, Media Controller, Audio capture-playback.. • UI/GUI/MMI • Productivity Applications • Simple and Flexible Design • Signal Processing Algorithms on general purpose RISC processor • Scalable for applications like Video over IP • An Elegant, Simple, low Cost, low Power solution for VoIP clients on Cellular Handsets • Software requires only industry standard general purpose RISC Processor Architecture. • Simply upgrading the Processor will achieve better system performance and the SW will be reusable without changes • Unified Tool chains and Software development skill set • Extremely short time to market

  6. Media Processing SubsystemRequires 90% of Processing Bandwidth (MHz / Channel) AEC 128 ms SpeechEncoder PCMI/F VAD PCM PacketI/F CNGEncoder Tx SpeechDecoder PLC Speech/Lost Pkt Adaptive Jitter Buffer SID/DTX CNG DTMF Generator Rx Tones

  7. Software Partitioning:Option1 • Implements complete 2-channel solutions including 3-way conferencing on AP • Simple Software Integration on Existing Platform • Short time to Market of 4 to 10 weeks • Includes 3-Way conferencing, implemented on AP • Requires less than 40 MHz/Channel (G.729A/B vocoder) on ARMv5TE • Application Processor (RISC) • Call Signaling • Call Control Manager, System and Media Frameworks • RTP/RTCP, SDP • Application layer and UI • Call Conferencing Engine • Media Processing for Channels - 1 & 2 • Acoustic Echo Cancellation • DTMF generation • CPT and Custom Tones • QOS: Adaptive Jitter Buffer and PLC • Automatic Gain Control • Noise Reduction • PCM Handler Software Added for VoIP

  8. Channel-1 Media Processing modules (AMR, AEC, Noise Reduction) targeted on the Application Processor (ARM RISC CPU) Software Partitioning:Option1 VoIP Signaling, Packetization Protocols Call Manager, VoIP media and system Frameworks, TCP/IP, UDP NW stack 3-Way Conferencing Mixer, Media Processing for Channel-2 (AMR) targeted on the Application Processor (ARM RISC CPU)

  9. Software Partitioning: Option II • Software Distributed between Host RISC Processor and DSP processor • Media Processing for Channel- targeted on DSP Processor • Existing RISC Microprocessor • Call Signaling • Call Control Manager, System and Media Frameworks • RTP/RTCP, SDP • Application layer and UI • Encryption • Call Conferencing Engine • Media Processing for Channel-2 • DTMF generation • CPT and Custom Tones • QOS: Adaptive Jitter Buffer and PLC • Existing DSP core • Media Processing for Channel-1 • Acoustic Echo Cancellation • Automatic Gain Control • Noise Reduction • PCM Handler Platform Services Existing Software available on Platform Software Added for VoP

  10. Software Partitioning: Option II Channel-1 Media Processing modules (AMR, AEC, Noise Reduction). Existing algorithms on Cellular platform VoIP Signaling, Packetization Protocols Call Manager, VoIP media and system Frameworks, TCP/IP, UDP NW stack 3-Way Conferencing Mixer, Media Processing for Channel-2 (AMR) targeted on the Application Processor (ARM RISC CPU)

  11. Press Release: HelloSoft Demonstrates Complete VoIP Solution on TI OMAP 1710 Cellular Platform

  12. Hellosoft’s VoIP SolutionAvailable for ARM & MIPS Processors • Complete Software Solution includes all necessary Protocols, Algorithms, Frameworks and System Software for a client device • Highly Optimized VoIP Solution, designed for single RISC Processor-based designs, Eliminates the need of DSP (SoftDSP) • Industry-best Performance for Media Processing Algorithms on RISC processors. • Excellent Voice Quality (PESQ and PSQM Scores) comparable or better than DSP-based Solutions. • Designed for Portability to Different OS/RTOS and Processor Architectures (Implements OS Abstraction). • Modular System Architecture. • Shipping to major Semiconductor and ODM customers

  13. VoIP Solution for HandsetsSoftware Blocks Licensed by Hellosoft

  14. THANKS

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